diff --git a/ChangeLog b/ChangeLog
index 9578518057..4fca2c433b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sat Dec 29 10:10:39 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* configure.in (crt_externs.h): use standard macro AC_CHECK_HEADERS.
+
 Fri Dec 28 23:12:44 2012  Charlie Somerville  <charlie@charliesomerville.com>
 
 	* configure.in: check for the whether crt_externs.h is present when compiling
diff --git a/configure.in b/configure.in
index 9e97d6113d..ee297ef371 100644
--- a/configure.in
+++ b/configure.in
@@ -1220,12 +1220,7 @@ main()
 		    LINK_SO="$LINK_SO
 $POSTLINK"
 		fi
-		AC_CACHE_CHECK(whether crt_externs.h is present for extern macro, rb_cv_crt_externs,
-		    [AC_TRY_COMPILE([ #include <crt_externs.h> ], [return 0;],
-		    rb_cv_crt_externs=yes, rb_cv_crt_externs=no)])
-		if test "$rb_cv_crt_externs" = yes; then
-		    AC_DEFINE(HAVE_CRT_EXTERNS_H)
-		fi
+		AC_CHECK_HEADERS(crt_externs.h)
 		],
 [hpux*], [	LIBS="-lm $LIBS"
 		ac_cv_c_inline=no],